* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download First Week slides - UNLV Physics - University of Nevada, Las Vegas
Corvus (constellation) wikipedia , lookup
Copernican heliocentrism wikipedia , lookup
Rare Earth hypothesis wikipedia , lookup
History of Mars observation wikipedia , lookup
Astronomical unit wikipedia , lookup
Aquarius (constellation) wikipedia , lookup
Planets beyond Neptune wikipedia , lookup
History of Solar System formation and evolution hypotheses wikipedia , lookup
Geocentric model wikipedia , lookup
Dialogue Concerning the Two Chief World Systems wikipedia , lookup
Extraterrestrial skies wikipedia , lookup
Satellite system (astronomy) wikipedia , lookup
Extraterrestrial life wikipedia , lookup
Formation and evolution of the Solar System wikipedia , lookup
Definition of planet wikipedia , lookup
Astrobiology wikipedia , lookup
IAU definition of planet wikipedia , lookup
Comparative planetary science wikipedia , lookup
Constellation wikipedia , lookup
Chinese astronomy wikipedia , lookup
Patronage in astronomy wikipedia , lookup
Archaeoastronomy wikipedia , lookup
Planets in astrology wikipedia , lookup
Astronomy in the medieval Islamic world wikipedia , lookup
Timeline of astronomy wikipedia , lookup
International Year of Astronomy wikipedia , lookup
Theoretical astronomy wikipedia , lookup
Observational astronomy wikipedia , lookup
History of astronomy wikipedia , lookup
Introduction Astronomy 104 Introduction and Overview Stephen Lepp University of Nevada, Las Vegas Physics Department Disability What is Ast 104? If you have a documented disability that may require assis- What should you do: Read the Book before class Outline the material Attend Lectures Fill out your outline tance, you will need to contact the Disability Services (DS) Grading 0652. ability Services is located within the Learning Enhancement Services (LES), in the Reynolds Student Services Complex, Suite 137. The phone number is 895-0866 or TDD 895- Astronomy 104 – p.2/26 Astronomy 104 – p.1/26 Magic of good grades for coordination in your academic accommodations. Dis- Attend Lectures In a land of science and a time of university the grades of a great student rest on the shoulders of an old man. His name: Dr. Lepp Astronomy 104 – p.3/26 Attend Lectures Learn what I thought was important A good friend is someone who visits you while you are in prison. A really good friend is someone who comes to hear your lectures. Lectures will expand on some material Ask questions Slakan saying: “Rates of Exchange” Malcolm Bradbury Astronomy 104 – p.4/26 Ancient Sky Astronomy 104 – p.5/26 days of the week Stars Sun Moon Five Planets (Mercury, Venus, Mars, Jupiter, Saturn) Comets and asteroids and other small bodies nebula Astronomy 104 – p.7/26 Sun Moon Mars Mercury Jupiter Venus Saturn Sunday Monday Tuesday Wednesday Thursday Friday Saturday Astronomy 104 – p.6/26 Average Distance from Sun (AU) domingo lunes Tiw martes Odin miércores Thor jueves Frigg viernes sábado Mercury 0.39 Venus 0.72 Earth 1.00 Mars 1.52 Jupiter 5.20 Saturn 9.54 Uranus 19.18 Neptune 30.06 Pluto 39.5 Astronomy 104 – p.8/26 Astronomy 104 – p.9/26 Outer Planets Inner Planets Planet Fun Facts Mercury is closest and takes 88 days to travel round the sun Mars Neptune Earth Uranus Pluto is furthest (on average) and takes 248 years to travel round the sun Venus Mercury Jupiter Mercury, Venus, Mars, Jupiter and Saturn are visible to the naked eye Saturn Pluto was discovered by an American in 1930. Pluto Astronomy 104 – p.10/26 Stars Astronomy 104 – p.11/26 Giant Star Astronomy 104 – p.12/26 Dwarf Star Stars are millions of times further Other solar systems other planets Range in mass from 1 10 to 100 times our sun Range in Luminosity from times our sun 1 10000 to 100000 Astronomy 104 – p.14/26 Astronomy 104 – p.13/26 Scientific Notation Powers of Ten Express numbers in a general form, n X × 10 , which is convenient for both large and small numbers. So for example 2.3 × 103 is 2300, 2.3 × 1040 is 23000000000000000000000000000000000000000 and 2.3 × 10−3 is 0.0023. What is 4 × 102 ? Astronomy 104 – p.16/26 0.000000001 0.000001 0.001 0.01 1 100 1,000 1,000,000 1,000,000,000 10−9 10−6 10−3 10−2 100 102 103 106 109 Astronomy 104 – p.15/26 Powers of Ten a billionth a millionth a thousandth a hundredth one a hundred a thousand a million a billion nanomicromillicenti- 0.000000001 0.000001 0.001 0.01 1 kilo1,000 mega- 1,000,000 giga- 1,000,000,000 tera1,000,000,000,000 Astronomy 104 – p.17/26 10−9 10−6 10−3 10−2 100 103 106 109 1012 n µ m c one k M G T Astronomy 104 – p.18/26 Sample Quiz Question The following questions are a sample quiz. Answer 1. What is Ast 104? (a) Stars and Galaxies (b) A Lot of FUN (c) A science requirement (d) all of the above (e) none of the above Astronomy 104 – p.19/26 Question (d) All of the above. Ast 104 is not Stars and Galaxies, but “Stars and Galaxies” is the title of the course, which will certainly be a lot of fun and fulfill the science requirement. Answer 1. What is the farthest Planet to the sun? (a) Mars (b) Mercury (c) Earth (d) Moon (e) Pluto Question (b) whomever wrote this question was apparently unaware Pluto is no longer a planet. Neptune is the furthest planet from the Sun. Astronomy 104 – p.22/26 Answer (b) 7,000 Astronomy 104 – p.25/26 Astronomy 104 – p.21/26 Astronomy 104 – p.20/26 Astronomy 104 – p.23/26 1. What is 7 × 103 ? (a) 700 (b) 7,000 (c) 7,000,000 (d) 0.007 (e) 0.0007 Astronomy 104 – p.24/26